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Ss 50 Luke
Designer: Sparkman And Stephens  ·  Builder: Paul E. Luke  ·  First built: 1981
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About the Ss 50 Luke

A lesser-known vessel in the broader sailing world, the Ss 50 Luke remains something of an enigma with limited documented specifications readily available. What can be gleaned suggests this is a cruising-oriented sailboat, likely suited to coastal and near-offshore passages where comfort and manageable handling take priority over outright racing performance. Without a wealth of published data, prospective buyers researching the Ss 50 Luke would be wise to seek out owner communities, yacht brokers with firsthand experience, and any surviving builder documentation to build a clearer picture of her sailing characteristics. Boats with limited public records often have dedicated followings among sailors who appreciate a more personal ownership experience, and the Ss 50 Luke may well fall into that category. For anyone considering adding her to their shortlist, a thorough survey by a qualified marine surveyor is particularly important when specifications are scarce. Hands-on time aboard and direct conversations with current or previous owners will provide the most reliable insight into how she performs, her construction quality, and whether she suits your intended sailing program.

Core Dimensions
LOA (Length Overall) 50.00 ft / 15.24 m
LWL (Waterline Length) 36.00 ft / 10.97 m
Beam 13.17 ft / 4.01 m
Max Draft 6.75 ft / 2.06 m
Displacement 40,000.00 lb / 18,144 kg
Ballast 15,000.00 lb / 6,804 kg
Sail Area (Reported) 1,105.00 ft² / 102.66 m²
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Ketch
Construction Aluminum
Designer Sparkman and Stephens
Builder Paul E. Luke
First Built 1981
Owner Reviews

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Performance Ratios
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
15.18
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
49.64
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
1.54
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 8.04
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 1.0
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